Senior Software Engineer (C++) for JVM runtime

Czechia·PragueEmployee - Full-time - Regularsenior

Software EngineerSoftware Engineering

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Quick Summary

Overview

We are seeking a highly skilled **Senior Software Engineer** to join our team developing Azul Prime, an award-winning enhanced build of OpenJDK designed for superior application performance,

Technical Tools

Software EngineerSoftware Engineering

We are seeking a highly skilled **Senior Software Engineer** to join our team developing Azul Prime, an award-winning enhanced build of OpenJDK designed for superior application performance, responsiveness, and efficiency. In this role, you will drive the development and optimization of the virtual machine (VM), contributing to garbage collection, HotSpot runtime, compiler runtime, remote compilation, and many other advanced challenges.

Design, develop, maintain, and optimize high‑performance, low‑level C++ code for system‑critical JVM runtime components and distributed client‑server communication using gRPC, HTTP/2, or HTTP, ensuring minimal overhead, robustness, and reliability at scale.

Lead the delivery of complex technical projects — from design through production — taking ownership of outcomes and navigating ambiguity under real time and resource constraints.

Contribute to the technical direction of the team: participate in design discussions, challenge and pressure-test technical approaches, and ensure robust solutions through constructive peer review.

Collaborate across teams — represent the team's technical interests in cross-team initiatives and contribute as a peer in design and direction discussions with partner engineering groups.

Mentor junior engineers, sharing expertise through reviews, pairing, and practical guidance that raises the quality bar across the team.

Explore and adopt AI-first workflows — proactively identifying where AI tools can enhance productivity, code quality, and development processes, and helping teammates adopt effective practices.

Perform detailed debugging, profiling, and root-cause analysis of complex software issues.

Develop comprehensive tests to ensure high quality and demonstrate performance improvements.

Bachelor's degree in Computer Science or a related field, and a minimum of 5 years of experience writing low‑level, high‑performance C++ code.

Solid knowledge of VM and compiler runtime design and implementation; familiarity with JVM internals is highly desirable.

Demonstrated ability to independently lead and deliver complex technical projects on time, managing competing priorities and technical uncertainty.

Experience mentoring engineers and contributing to a team's technical culture and practices.

Strong proficiency with low‑level programming concepts — memory management, pointers, concurrency, and multithreading.¨

Experience using debuggers, profilers, and performance analysis tools to investigate and resolve complex problems.

Understanding of hardware architectures (e.g., x86, ARM), operating system internals (e.g., Linux, macOS), and languages such as Java or Rust is an advantage.

Referral Program — help us grow with great people.
Premium IT equipment — MacBook Pro or hardware of your choice.
5 weeks of holidays + 5 sick days.
Flexible working hours; full remote possible.
Prague city center offices.
Work alongside top experts worldwide contributing to the Java ecosystem.

Location & Eligibility

Where is the job

Prague, Czechia

Hybrid — some on-site time required

Who can apply

Open to applicants worldwide

Listing Details

Posted: June 10, 2026
First seen: June 11, 2026
Last seen: June 11, 2026

Posting Health

Days active: 0
Repost count: 0
Trust Level: 70%
Scored at: June 11, 2026

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Azul

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Azul Systems develops and distributes runtimes (JDK, JRE, JVM) for executing Java-based applications. It is the largest company 100% focused on Java and the JVM.

Employees

350

Founded

2002

Domain

Jobs

External application · ~5 min on Azul's site

Please let Azul know you found this job on Jobera.